After the Ten-Tails was sent to Orochimaru's laboratory, Orochimaru immediately began researching it.
Quite interestingly, Orochimaru discovered that individual Ten-Tails also differed from one another. This Ten-Tails was vastly different from the one in the Shinobi World.
Orochimaru had studied the Demonic Statue of the Outer Path in the Shinobi World before—the shell of the Ten-Tails.
After obtaining Madara Uchiha's Rinnegan, Konoha summoned the Demonic Statue of the Outer Path and sealed it away for research.
This Ten-Tails was highly active and even showed signs of developing self-awareness.
It was not strange for a Ten-Tails to develop self-awareness if it went unmanaged by the Ōtsutsuki for too long.
The Sage of Six Paths had stripped nine portions of chakra from the Ten-Tails, and they became the nine Tailed Beasts with minds of their own.
However, this Ten-Tails was not particularly useful to Konoha at this stage.
A Ten-Tails that had not become a Divine Tree and absorbed the chakra of an entire world had rather limited strength—perhaps it was not even as strong as the Nine-Tails.
On the other hand, their research on Blackbeard had produced considerable results.
Blackbeard's constitution was extremely special, allowing him to bear the power of two Devil Fruits. Of course, the Dark-Dark Fruit was also crucial. It could be said that both his special constitution and the Dark-Dark Fruit were indispensable.
Recently, Orochimaru and the Second Hokage had been researching ways to use sealing techniques to stop the rule power within Devil Fruits from escaping. After killing Blackbeard, they could preserve the Dark-Dark Fruit as well.
Then, they could use the Dark-Dark Fruit's ability to strip other users of their powers. Without question, this would rapidly strengthen Konoha. Devil Fruits were secret treasures that could let someone rise to the top in a single step.